The Valve,check, cataloged under National Stock Number 4820-01-087-8863, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lincoln Brass Works Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-087-8863 |
| Primary Part Number | 4498-2-R |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lincoln Brass Works Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Mounting Position | VERTICAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Material Document and Classification | SAE 360 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.125 INCHES FIRST END IN |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY BODY LINING |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1ST7 | Oshkosh Defense Llc (USA) |
| 4498-2-R PRIMARY | Lincoln Brass Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 678532 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 678532 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| Y651043 | 5/9 Secondary reference White Motor Corp |
| 3885846 | 5/9 Secondary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| 384-DV | 5/2 Secondary reference U.S. Government activity |
| 1ST7 | 5/9 Secondary reference Oshkosh Corp |
| 3073348PK-001 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-087-8863 is a Valve,check, manufactured by Lincoln Brass Works Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-087-8863 has 2 manufacturer part numbers on file: 1ST7 (Oshkosh Defense Llc), 4498-2-R (Lincoln Brass Works Inc).
Key specifications for 4498-2-R: Flow Control Device: BALL; Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Mounting Position: VERTICAL. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.